Network Security Specialist (flexible hybrid in Chicago, IL or Overland Park, KS)

Cboe is a leading provider of market infrastructure and tradable products, delivering cutting-edge trading, clearing, and investment solutions. The Network Security Specialist will support global offices and data centers, ensuring secure and reliable connectivity while troubleshooting network issues and maintaining critical infrastructure. Responsibilities Monitor and resolve tickets from both the network and security queues Troubleshoot network connectivity issues including firewalls, routers, switches, and wireless access points Perform software and code upgrades on network and firewall devices Review and maintain firewall policies and rulesets Replace and validate network and firewall hardware as needed Assist with maintaining high availability across all critical systems Skills 1–2 years of experience in networking or network operations/support Strong troubleshooting, communication, and customer service skills Network support experience with routing, switching, and wireless technologies required Familiarity with firewall administration Working knowledge of ACLs and general network troubleshooting Scripting experience (Python) is a plus Certifications such as CCNA (strong plus), Network+, Security+, or PCCET is a plus Benefits Fair and competitive salary and incentive compensation packages with an upside for overachievement Generous paid time off, including vacation, personal days, sick days and annual community service days Flexible, hybrid work environment Health, dental and vision benefits, including access to telemedicine and mental health services 2:1 401(k) match, up to 8% match immediately upon hire Discounted Employee Stock Purchase Plan Tax Savings Accounts for health, dependent and transportation Employee referral bonus program Volunteer opportunities to help you give back to your communities Complimentary lunch, snacks and coffee in any Cboe office Paid Tuition assistance and education opportunities Generous charitable giving company match Paid parental leave and fertility benefits On-site gyms and discounts to other fitness centers Company Overview Operating across every dimension of commercial real estate, CBRE sees more so you can do more. It was founded in 1906, and is headquartered in Dallas, Texas, USA, with a workforce of 10001+ employees. Its website is